Piston, Engine

Piston Rings
Piston Ring End Gap - First Compression Ring Measured inch) Cylinder Bore
Production 0.23-0.44 mm (0.009-0.017 inch)
Service 0.23-0.5 mm (0.009-0.0196 inch)
Piston Ring End Gap - Second Compression Ring - Measured in Cylinder Bore
Production 0.44-0.7 mm (0.017-0.027 inch)
Service 0.44-0.76 mm (0.0173-0.03 inch)
Piston Ring End Gap - Oil Control Ring - Measured in Cylinder Bore
Production 0.18-0.75 mm (0.007-0.029 inch)
Service 0.18-0.81 mm (0.007-0.032 inch)
Piston Ring to Groove Clearance - First Compression Ring
Production 0.04-0.085 mm (0.00157-0.00335 inch)
Service 0.04-0.085 mm (0.00157-0.00335 inch)
Piston Ring to Groove Clearance - Second Compression Ring
Production 0.04-0.078 mm (0.00157-0.0031 inch)
Service 0.04-0.078 mm (0.00157-0.0031 inch)
Piston Ring to Groove Clearance - Oil Control Ring
Production 0.012-0.2 mm (0.0005-0.0078 inch)
Service 0.012-0.2 mm (0.0005-0.0078 inch)
Pistons and Pins
Pin - Piston Pin Clearance to Piston Pin Bore
Production 0.002-0.01 mm (0.00008-0.0004 inch)
Service 0.002-0.015 mm (0.00008-0.0006 inch)
Pin - Piston Pin Diameter 23.952-23.955 mm (0.943-0.943 inch)
Pin - Piston Pin Fit in Connecting Rod Bore
Production 0.007-0.02 mm (0.00027-0.00078 inch)
Service 0.007-0.022 mm (0.00027-0.00086 inch)
Piston - Piston Diameter - Measured Over Skirt Coating 96.002-96.036 mm (3.779-3.78 inch)
Piston - Piston to Bore Clearance
Production 0.036 to 0.016 mm (0.0014 to 0.0006 inch)
Service Limit with Skirt Coating Worn Off 0.071 mm (0.0028 inch)